how to make JTextPane paint anti-aliased font?

StackOverflow https://stackoverflow.com/questions/2266199

  •  20-09-2019
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Question

in the a swing app i'm rendering text with a custom JComponent, using Graphics.drawString(). here is a sample:
aa text http://img525.imageshack.us/img525/4928/drawstringsample.jpg
in that same app, i'm rendering text using a JTextPane. here is a sample:
alt text http://img28.imageshack.us/img28/1134/jtextpanesample.jpg

can you notice how the lower sample is a little 'smudged'? well, i can't figure out how to make it look like the upper sample.

thanks, asaf :-)

update:

  • System.setProperty("awt.useSystemAAFontSettings","false") and "lcd" too aren't working.
  • ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF) in paint() isn't working
  • putClientProperty(sun.swing.SwingUtilities2.AA_TEXT_PROPERTY_KEY, Boolean.TRUE) gives java.lang.ClassCastException: java.lang.Boolean cannot be cast to sun.swing.SwingUtilities2$AATextInfo
Was it helpful?

Solution 2

putClientProperty(SwingUtilities2.AA_TEXT_PROPERTY_KEY, null);

OTHER TIPS

This will result in an antialiased font in a JLabel. Make sure you call super.paintComponent(g); after setting the RenderingHints.

JLabel lblFont = new JLabel(){

            @Override
            public void paintComponent(Graphics g) {
                Graphics2D graphics2d = (Graphics2D) g;
                graphics2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_ON);
                super.paintComponent(g);
            }
        };

If you want your result to look like the the upper sample, then you want to disable anti-aliasing.

The first sample in your question has anti-aliasing disabled and the second sample has it enabled.

According to http://mindprod.com/jgloss/antialiasing.html the following code should help:

jtextArea.putClientProperty(com.sun.java.swing.SwingUtilities2.AA_TEXT_PROPERTY_KEY, Boolean.TRUE);

Notice that the reference to com.sun.java.* will make your application non-portable to non-Sun JVMs (and possibly to different versions of Sun JVMs).

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